1110 lines
36 KiB
Go
1110 lines
36 KiB
Go
package graphvent
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import (
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"crypto/ecdh"
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"encoding/binary"
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"errors"
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"fmt"
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"math"
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"reflect"
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"runtime"
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"sync"
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badger "github.com/dgraph-io/badger/v3"
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)
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var (
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NodeNotFoundError = errors.New("Node not found in DB")
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ECDH = ecdh.X25519()
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)
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type ExtensionInfo struct {
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Type reflect.Type
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Data interface{}
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}
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type NodeInfo struct {
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Extensions []ExtType
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}
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type TypeInfo struct {
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Type reflect.Type
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Serialize TypeSerialize
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Deserialize TypeDeserialize
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}
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type KindInfo struct {
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Type SerializedType
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Serialize TypeSerialize
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Deserialize TypeDeserialize
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}
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// A Context stores all the data to run a graphvent process
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type Context struct {
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// DB is the database connection used to load and write nodes
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DB * badger.DB
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// Logging interface
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Log Logger
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// Map between database extension hashes and the registered info
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Extensions map[ExtType]ExtensionInfo
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ExtensionTypes map[reflect.Type]ExtType
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// Map between databse policy hashes and the registered info
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Policies map[PolicyType]reflect.Type
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PolicyTypes map[reflect.Type]PolicyType
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// Map between serialized signal hashes and the registered info
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Signals map[SignalType]reflect.Type
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SignalTypes map[reflect.Type]SignalType
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// Map between database type hashes and the registered info
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Nodes map[NodeType]NodeInfo
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// Map between go types and registered info
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Types map[SerializedType]TypeInfo
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TypeReflects map[reflect.Type]SerializedType
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Kinds map[reflect.Kind]KindInfo
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KindTypes map[SerializedType]reflect.Kind
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// Routing map to all the nodes local to this context
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nodeMapLock sync.RWMutex
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nodeMap map[NodeID]*Node
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}
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// Register a NodeType to the context, with the list of extensions it requires
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func (ctx *Context) RegisterNodeType(node_type NodeType, extensions []ExtType) error {
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_, exists := ctx.Nodes[node_type]
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if exists == true {
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return fmt.Errorf("Cannot register node type %+v, type already exists in context", node_type)
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}
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ext_found := map[ExtType]bool{}
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for _, extension := range(extensions) {
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_, in_ctx := ctx.Extensions[extension]
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if in_ctx == false {
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return fmt.Errorf("Cannot register node type %+v, required extension %+v not in context", node_type, extension)
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}
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_, duplicate := ext_found[extension]
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if duplicate == true {
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return fmt.Errorf("Duplicate extension %+v found in extension list", extension)
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}
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ext_found[extension] = true
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}
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ctx.Nodes[node_type] = NodeInfo{
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Extensions: extensions,
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}
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return nil
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}
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func (ctx *Context) RegisterPolicy(reflect_type reflect.Type, policy_type PolicyType) error {
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_, exists := ctx.Policies[policy_type]
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if exists == true {
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return fmt.Errorf("Cannot register policy of type %+v, type already exists in context", policy_type)
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}
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ctx.Policies[policy_type] = reflect_type
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ctx.PolicyTypes[reflect_type] = policy_type
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return nil
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}
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func (ctx *Context)RegisterSignal(reflect_type reflect.Type, signal_type SignalType) error {
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_, exists := ctx.Signals[signal_type]
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if exists == true {
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return fmt.Errorf("Cannot register signal of type %+v, type already exists in context", signal_type)
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}
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ctx.Signals[signal_type] = reflect_type
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ctx.SignalTypes[reflect_type] = signal_type
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return nil
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}
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// Add a node to a context, returns an error if the def is invalid or already exists in the context
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func (ctx *Context)RegisterExtension(reflect_type reflect.Type, ext_type ExtType, data interface{}) error {
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_, exists := ctx.Extensions[ext_type]
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if exists == true {
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return fmt.Errorf("Cannot register extension of type %+v, type already exists in context", ext_type)
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}
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ctx.Extensions[ext_type] = ExtensionInfo{
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Type: reflect_type,
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Data: data,
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}
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ctx.ExtensionTypes[reflect_type] = ext_type
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return nil
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}
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func (ctx *Context)RegisterKind(kind reflect.Kind, ctx_type SerializedType, serialize TypeSerialize, deserialize TypeDeserialize) error {
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_, exists := ctx.Kinds[kind]
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if exists == true {
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return fmt.Errorf("Cannot register kind %+v, kind already exists in context", kind)
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}
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_, exists = ctx.KindTypes[ctx_type]
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if exists == true {
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return fmt.Errorf("0x%x is already registered, cannot use for %+v", ctx_type, kind)
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}
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if deserialize == nil {
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return fmt.Errorf("Cannot register field without deserialize function")
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}
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if serialize == nil {
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return fmt.Errorf("Cannot register field without serialize function")
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}
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ctx.Kinds[kind] = KindInfo{
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ctx_type,
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serialize,
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deserialize,
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}
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ctx.KindTypes[ctx_type] = kind
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return nil
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}
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func (ctx *Context)RegisterType(reflect_type reflect.Type, ctx_type SerializedType, serialize TypeSerialize, deserialize TypeDeserialize) error {
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_, exists := ctx.Types[ctx_type]
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if exists == true {
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return fmt.Errorf("Cannot register field of type %+v, type already exists in context", ctx_type)
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}
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_, exists = ctx.TypeReflects[reflect_type]
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if exists == true {
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return fmt.Errorf("Cannot register field with type %+v, type already registered in context", reflect_type)
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}
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if deserialize == nil {
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return fmt.Errorf("Cannot register field without deserialize function")
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}
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if serialize == nil {
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return fmt.Errorf("Cannot register field without serialize function")
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}
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ctx.Types[ctx_type] = TypeInfo{
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Type: reflect_type,
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Serialize: serialize,
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Deserialize: deserialize,
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}
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ctx.TypeReflects[reflect_type] = ctx_type
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return nil
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}
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func (ctx *Context) AddNode(id NodeID, node *Node) {
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ctx.nodeMapLock.Lock()
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ctx.nodeMap[id] = node
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ctx.nodeMapLock.Unlock()
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}
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func (ctx *Context) Node(id NodeID) (*Node, bool) {
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ctx.nodeMapLock.RLock()
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node, exists := ctx.nodeMap[id]
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ctx.nodeMapLock.RUnlock()
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return node, exists
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}
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// Get a node from the context, or load from the database if not loaded
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func (ctx *Context) getNode(id NodeID) (*Node, error) {
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target, exists := ctx.Node(id)
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if exists == false {
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var err error
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target, err = LoadNode(ctx, id)
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if err != nil {
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return nil, err
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}
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}
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return target, nil
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}
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// Route a Signal to dest. Currently only local context routing is supported
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func (ctx *Context) Send(messages Messages) error {
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for _, msg := range(messages) {
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if msg.Dest == ZeroID {
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panic("Can't send to null ID")
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}
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target, err := ctx.getNode(msg.Dest)
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if err == nil {
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select {
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case target.MsgChan <- msg:
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ctx.Log.Logf("signal", "Sent %s -> %+v", target.ID, msg)
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default:
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buf := make([]byte, 4096)
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n := runtime.Stack(buf, false)
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stack_str := string(buf[:n])
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return fmt.Errorf("SIGNAL_OVERFLOW: %s - %s", msg.Dest, stack_str)
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}
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} else if errors.Is(err, NodeNotFoundError) {
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// TODO: Handle finding nodes in other contexts
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return err
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} else {
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return err
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}
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}
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return nil
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}
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// Create a new Context with the base library content added
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func NewContext(db * badger.DB, log Logger) (*Context, error) {
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ctx := &Context{
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DB: db,
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Log: log,
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Policies: map[PolicyType]reflect.Type{},
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PolicyTypes: map[reflect.Type]PolicyType{},
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Extensions: map[ExtType]ExtensionInfo{},
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ExtensionTypes: map[reflect.Type]ExtType{},
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Signals: map[SignalType]reflect.Type{},
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SignalTypes: map[reflect.Type]SignalType{},
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Nodes: map[NodeType]NodeInfo{},
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nodeMap: map[NodeID]*Node{},
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Types: map[SerializedType]TypeInfo{},
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TypeReflects: map[reflect.Type]SerializedType{},
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Kinds: map[reflect.Kind]KindInfo{},
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KindTypes: map[SerializedType]reflect.Kind{},
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}
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var err error
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err = ctx.RegisterKind(reflect.Pointer, NewSerializedType("pointer"),
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func(ctx *Context, ctx_type SerializedType, reflect_type reflect.Type, value *reflect.Value) (SerializedValue, error) {
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var data []byte
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var elem_value *reflect.Value = nil
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if value == nil {
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data = nil
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} else if value.IsZero() {
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data = []byte{0x01}
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} else {
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data = []byte{0x00}
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ev := value.Elem()
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elem_value = &ev
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}
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elem, err := serializeValue(ctx, reflect_type.Elem(), elem_value)
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if err != nil {
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return SerializedValue{}, err
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}
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if elem.Data != nil {
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data = append(data, elem.Data...)
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}
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return SerializedValue{
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append([]SerializedType{ctx_type}, elem.TypeStack...),
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data,
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}, nil
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}, func(ctx *Context, value SerializedValue) (reflect.Type, *reflect.Value, SerializedValue, error) {
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if value.Data == nil {
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elem_type, _, _, err := DeserializeValue(ctx, value)
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if err != nil {
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return nil, nil, SerializedValue{}, err
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}
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return reflect.PointerTo(elem_type), nil, value, nil
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} else if len(value.Data) < 1 {
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return nil, nil, SerializedValue{}, fmt.Errorf("Not enough data to deserialize pointer")
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} else {
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pointer_flags := value.Data[0]
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value.Data = value.Data[1:]
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if pointer_flags == 0x00 {
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_, elem_value, remaining_data, err := DeserializeValue(ctx, value)
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if err != nil {
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return nil, nil, SerializedValue{}, err
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}
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pointer_value := elem_value.Addr()
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return pointer_value.Type(), &pointer_value, remaining_data, nil
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} else if pointer_flags == 0x01 {
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elem_type, _, remaining_data, err := DeserializeValue(ctx, value)
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if err != nil {
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return nil, nil, SerializedValue{}, err
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}
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pointer_type := reflect.PointerTo(elem_type)
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pointer_value := reflect.New(pointer_type).Elem()
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return pointer_type, &pointer_value, remaining_data, nil
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} else {
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return nil, nil, SerializedValue{}, fmt.Errorf("unknown pointer flags: %d", pointer_flags)
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}
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}
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})
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if err != nil {
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return nil, err
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}
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err = ctx.RegisterKind(reflect.Struct, NewSerializedType("struct"),
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func(ctx *Context, ctx_type SerializedType, reflect_type reflect.Type, value *reflect.Value)(SerializedValue, error){
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serialized_value := SerializedValue{
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[]SerializedType{ctx_type},
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nil,
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}
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field_values := map[SerializedType]SerializedValue{}
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for _, field := range(reflect.VisibleFields(reflect_type)) {
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gv_tag, tagged_gv := field.Tag.Lookup("gv")
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if tagged_gv == false {
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continue
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} else if gv_tag == "" {
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continue
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} else {
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// Add to the type stack and data stack
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field_hash := Hash(FieldNameBase, gv_tag)
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if value == nil {
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field_ser, err := serializeValue(ctx, field.Type, nil)
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if err != nil {
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return SerializedValue{}, err
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}
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field_values[field_hash] = field_ser
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} else {
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field_value := value.FieldByIndex(field.Index)
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field_ser, err := serializeValue(ctx, field.Type, &field_value)
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if err != nil {
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return SerializedValue{}, err
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}
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field_values[field_hash] = field_ser
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}
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}
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}
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return serialized_value, nil
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}, func(ctx *Context, value SerializedValue)(reflect.Type, *reflect.Value, SerializedValue, error){
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return nil, nil, SerializedValue{}, fmt.Errorf("deserialize struct not implemented")
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})
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if err != nil {
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return nil, err
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}
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err = ctx.RegisterKind(reflect.Int, NewSerializedType("int"),
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func(ctx *Context, ctx_type SerializedType, reflect_type reflect.Type, value *reflect.Value)(SerializedValue, error){
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var data []byte = nil
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if value != nil {
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data = make([]byte, 8)
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binary.BigEndian.PutUint64(data, uint64(value.Int()))
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}
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return SerializedValue{
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[]SerializedType{ctx_type},
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data,
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}, nil
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}, func(ctx *Context, value SerializedValue)(reflect.Type, *reflect.Value, SerializedValue, error){
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if value.Data == nil {
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return reflect.TypeOf(0), nil, value, nil
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}
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if len(value.Data) < 8 {
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return nil, nil, SerializedValue{}, fmt.Errorf("invalid length: %d/8", len(value.Data))
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}
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int_val := reflect.ValueOf(int(binary.BigEndian.Uint64(value.Data[0:8])))
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value.Data = value.Data[8:]
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return int_val.Type(), &int_val, value, nil
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})
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if err != nil {
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return nil, err
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}
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err = ctx.RegisterKind(reflect.Bool, NewSerializedType("bool"),
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func(ctx *Context, ctx_type SerializedType, reflect_type reflect.Type, value *reflect.Value)(SerializedValue, error){
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var data []byte = nil
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if value != nil {
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b := value.Bool()
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if b == true {
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data = []byte{0x01}
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} else {
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data = []byte{0x00}
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}
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}
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return SerializedValue{
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[]SerializedType{ctx_type},
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data,
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}, nil
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}, func(ctx *Context, value SerializedValue)(reflect.Type, *reflect.Value, SerializedValue, error){
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if value.Data == nil {
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return reflect.TypeOf(true), nil, value, nil
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} else if len(value.Data) == 0 {
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return nil, nil, SerializedValue{}, fmt.Errorf("not enough data to deserialize bool")
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} else {
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b := value.Data[0]
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value.Data = value.Data[1:]
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var val reflect.Value
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switch b {
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case 0x00:
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val = reflect.ValueOf(false)
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case 0x01:
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val = reflect.ValueOf(true)
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default:
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return nil, nil, SerializedValue{}, fmt.Errorf("unknown boolean 0x%x", b)
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}
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return reflect.TypeOf(true), &val, value, nil
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}
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})
|
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if err != nil {
|
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return nil, err
|
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}
|
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|
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err = ctx.RegisterKind(reflect.Float64, NewSerializedType("float64"),
|
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func(ctx *Context, ctx_type SerializedType, reflect_type reflect.Type, value *reflect.Value)(SerializedValue, error){
|
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var data []byte = nil
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if value != nil {
|
|
// TODO: fix if underlying memory layout of float32 changes(or if it's architecture-dependent)
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data = make([]byte, 8)
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val := math.Float64bits(float64(value.Float()))
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binary.BigEndian.PutUint64(data, val)
|
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}
|
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return SerializedValue{
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[]SerializedType{ctx_type},
|
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data,
|
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}, nil
|
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}, func(ctx *Context, value SerializedValue)(reflect.Type, *reflect.Value, SerializedValue, error){
|
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if value.Data == nil {
|
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return reflect.TypeOf(float64(0)), nil, value, nil
|
|
} else {
|
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if len(value.Data) < 8 {
|
|
return nil, nil, SerializedValue{}, fmt.Errorf("Not enough data to deserialize float32")
|
|
}
|
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val_int := binary.BigEndian.Uint64(value.Data[0:8])
|
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value.Data = value.Data[8:]
|
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val := math.Float64frombits(val_int)
|
|
|
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float_val := reflect.ValueOf(val)
|
|
|
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return float_val.Type(), &float_val, value, nil
|
|
}
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterKind(reflect.Float32, NewSerializedType("float32"),
|
|
func(ctx *Context, ctx_type SerializedType, reflect_type reflect.Type, value *reflect.Value)(SerializedValue, error){
|
|
var data []byte = nil
|
|
if value != nil {
|
|
// TODO: fix if underlying memory layout of float32 changes(or if it's architecture-dependent)
|
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data = make([]byte, 4)
|
|
val := math.Float32bits(float32(value.Float()))
|
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binary.BigEndian.PutUint32(data, val)
|
|
}
|
|
return SerializedValue{
|
|
[]SerializedType{ctx_type},
|
|
data,
|
|
}, nil
|
|
}, func(ctx *Context, value SerializedValue)(reflect.Type, *reflect.Value, SerializedValue, error){
|
|
if value.Data == nil {
|
|
return reflect.TypeOf(float32(0)), nil, value, nil
|
|
} else {
|
|
if len(value.Data) < 4 {
|
|
return nil, nil, SerializedValue{}, fmt.Errorf("Not enough data to deserialize float32")
|
|
}
|
|
val_int := binary.BigEndian.Uint32(value.Data[0:4])
|
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value.Data = value.Data[4:]
|
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val := math.Float32frombits(val_int)
|
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|
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float_value := reflect.ValueOf(val)
|
|
|
|
return float_value.Type(), &float_value, value, nil
|
|
}
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterKind(reflect.Uint32, NewSerializedType("uint32"),
|
|
func(ctx *Context, ctx_type SerializedType, reflect_type reflect.Type, value *reflect.Value)(SerializedValue, error){
|
|
data := make([]byte, 4)
|
|
if value != nil {
|
|
binary.BigEndian.PutUint32(data, uint32(value.Uint()))
|
|
}
|
|
return SerializedValue{
|
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[]SerializedType{ctx_type},
|
|
data,
|
|
}, nil
|
|
}, func(ctx *Context, value SerializedValue)(reflect.Type, *reflect.Value, SerializedValue, error){
|
|
if value.Data == nil {
|
|
return reflect.TypeOf(uint32(0)), nil, value, nil
|
|
} else {
|
|
if len(value.Data) < 4 {
|
|
return nil, nil, SerializedValue{}, fmt.Errorf("Not enough data to deserialize uint32")
|
|
}
|
|
val := binary.BigEndian.Uint32(value.Data[0:4])
|
|
value.Data = value.Data[4:]
|
|
int_value := reflect.ValueOf(val)
|
|
|
|
return int_value.Type(), &int_value, value, nil
|
|
}
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterKind(reflect.String, NewSerializedType("string"),
|
|
func(ctx *Context, ctx_type SerializedType, reflect_type reflect.Type, value *reflect.Value)(SerializedValue, error){
|
|
if value == nil {
|
|
return SerializedValue{
|
|
[]SerializedType{ctx_type},
|
|
nil,
|
|
}, nil
|
|
}
|
|
|
|
data := make([]byte, 8)
|
|
str := value.String()
|
|
binary.BigEndian.PutUint64(data, uint64(len(str)))
|
|
return SerializedValue{
|
|
[]SerializedType{SerializedType(ctx_type)},
|
|
append(data, []byte(str)...),
|
|
}, nil
|
|
}, func(ctx *Context, value SerializedValue)(reflect.Type, *reflect.Value, SerializedValue, error){
|
|
if value.Data == nil {
|
|
return reflect.TypeOf(""), nil, value, nil
|
|
} else if len(value.Data) < 8 {
|
|
return nil, nil, SerializedValue{}, fmt.Errorf("Not enough data to deserialize string")
|
|
} else {
|
|
str_len := binary.BigEndian.Uint64(value.Data[0:8])
|
|
value.Data = value.Data[8:]
|
|
if len(value.Data) < int(str_len) {
|
|
return nil, nil, SerializedValue{}, fmt.Errorf("Not enough data to deserialize string of length %d(%d)", str_len, len(value.Data))
|
|
}
|
|
string_bytes := value.Data[:str_len]
|
|
value.Data = value.Data[str_len:]
|
|
str_value := reflect.ValueOf(string(string_bytes))
|
|
return reflect.TypeOf(""), &str_value, value, nil
|
|
}
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
|
|
err = ctx.RegisterKind(reflect.Array, NewSerializedType("array"),
|
|
func(ctx *Context, ctx_type SerializedType, reflect_type reflect.Type, value *reflect.Value)(SerializedValue, error){
|
|
var data []byte
|
|
if value == nil {
|
|
data = nil
|
|
} else if value.Len() == 0 {
|
|
data = []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}
|
|
} else {
|
|
data := make([]byte, 8)
|
|
binary.BigEndian.PutUint64(data, uint64(value.Len()))
|
|
|
|
var type_stack []SerializedType = nil
|
|
for i := 0; i < value.Len(); i += 1 {
|
|
val := value.Index(i)
|
|
element, err := serializeValue(ctx, reflect_type.Elem(), &val)
|
|
if err != nil {
|
|
return SerializedValue{}, err
|
|
}
|
|
if type_stack == nil {
|
|
type_stack = append([]SerializedType{ctx_type}, element.TypeStack...)
|
|
}
|
|
data = append(data, element.Data...)
|
|
}
|
|
}
|
|
|
|
elem, err := serializeValue(ctx, reflect_type.Elem(), nil)
|
|
if err != nil {
|
|
return SerializedValue{}, err
|
|
}
|
|
|
|
return SerializedValue{
|
|
append([]SerializedType{ctx_type}, elem.TypeStack...),
|
|
data,
|
|
}, nil
|
|
}, func(ctx *Context, value SerializedValue)(reflect.Type, *reflect.Value, SerializedValue, error){
|
|
return nil, nil, SerializedValue{}, fmt.Errorf("deserialize array unimplemented")
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterKind(reflect.Interface, NewSerializedType("interface"),
|
|
func(ctx *Context, ctx_type SerializedType, reflect_type reflect.Type, value *reflect.Value)(SerializedValue, error){
|
|
var data []byte
|
|
type_stack := []SerializedType{}
|
|
if value == nil {
|
|
data = nil
|
|
} else if value.IsZero() {
|
|
return SerializedValue{}, fmt.Errorf("Cannot serialize nil interfaces")
|
|
} else {
|
|
elem_value := value.Elem()
|
|
elem, err := serializeValue(ctx, value.Elem().Type(), &elem_value)
|
|
if err != nil {
|
|
return SerializedValue{}, err
|
|
}
|
|
data = elem.Data
|
|
type_stack = elem.TypeStack
|
|
}
|
|
return SerializedValue{
|
|
append([]SerializedType{ctx_type}, type_stack...),
|
|
data,
|
|
}, nil
|
|
}, func(ctx *Context, value SerializedValue)(reflect.Type, *reflect.Value, SerializedValue, error){
|
|
return nil, nil, SerializedValue{}, fmt.Errorf("deserialize interface unimplemented")
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
|
|
err = ctx.RegisterKind(reflect.Map, NewSerializedType("map"),
|
|
func(ctx *Context, ctx_type SerializedType, reflect_type reflect.Type, value *reflect.Value)(SerializedValue, error){
|
|
return SerializedValue{}, fmt.Errorf("serialize map unimplemented")
|
|
}, func(ctx *Context, value SerializedValue)(reflect.Type, *reflect.Value, SerializedValue, error){
|
|
return nil, nil, value, fmt.Errorf("deserialize map unimplemented")
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterKind(reflect.Int8, NewSerializedType("int8"),
|
|
func(ctx *Context, ctx_type SerializedType, reflect_type reflect.Type, value *reflect.Value)(SerializedValue, error){
|
|
var data []byte = nil
|
|
if value != nil {
|
|
data = []byte{byte(value.Int())}
|
|
}
|
|
return SerializedValue{
|
|
[]SerializedType{ctx_type},
|
|
data,
|
|
}, nil
|
|
}, func(ctx *Context, value SerializedValue)(reflect.Type, *reflect.Value, SerializedValue, error){
|
|
if value.Data == nil {
|
|
return reflect.TypeOf(int8(0)), nil, value, nil
|
|
} else {
|
|
if len(value.Data) < 1 {
|
|
return nil, nil, SerializedValue{}, fmt.Errorf("Not enough data to deserialize int8")
|
|
}
|
|
i := int8(value.Data[0])
|
|
value.Data = value.Data[1:]
|
|
val := reflect.ValueOf(i)
|
|
return val.Type(), &val, value, nil
|
|
}
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterKind(reflect.Uint8, NewSerializedType("uint8"),
|
|
func(ctx *Context, ctx_type SerializedType, reflect_type reflect.Type, value *reflect.Value)(SerializedValue, error){
|
|
var data []byte = nil
|
|
if value != nil {
|
|
data = []byte{uint8(value.Uint())}
|
|
}
|
|
return SerializedValue{
|
|
[]SerializedType{ctx_type},
|
|
data,
|
|
}, nil
|
|
}, func(ctx *Context, value SerializedValue)(reflect.Type, *reflect.Value, SerializedValue, error){
|
|
if value.Data == nil {
|
|
return reflect.TypeOf(uint8(0)), nil, value, nil
|
|
} else {
|
|
if len(value.Data) < 1 {
|
|
return nil, nil, SerializedValue{}, fmt.Errorf("Not enough data to deserialize uint8")
|
|
}
|
|
i := uint8(value.Data[0])
|
|
value.Data = value.Data[1:]
|
|
val := reflect.ValueOf(i)
|
|
return val.Type(), &val, value, nil
|
|
}
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterKind(reflect.Uint16, NewSerializedType("uint16"),
|
|
func(ctx *Context, ctx_type SerializedType, reflect_type reflect.Type, value *reflect.Value)(SerializedValue, error){
|
|
var data []byte = nil
|
|
if value != nil {
|
|
data = make([]byte, 2)
|
|
binary.BigEndian.PutUint16(data, uint16(value.Uint()))
|
|
}
|
|
return SerializedValue{
|
|
[]SerializedType{ctx_type},
|
|
data,
|
|
}, nil
|
|
}, func(ctx *Context, value SerializedValue)(reflect.Type, *reflect.Value, SerializedValue, error){
|
|
if value.Data == nil {
|
|
return reflect.TypeOf(uint16(0)), nil, value, nil
|
|
} else {
|
|
if len(value.Data) < 2 {
|
|
return nil, nil, SerializedValue{}, fmt.Errorf("Not enough data to deserialize uint16")
|
|
}
|
|
val := binary.BigEndian.Uint16(value.Data[0:2])
|
|
value.Data = value.Data[2:]
|
|
i := reflect.ValueOf(val)
|
|
|
|
return i.Type(), &i, value, nil
|
|
}
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterKind(reflect.Int16, NewSerializedType("int16"),
|
|
func(ctx *Context, ctx_type SerializedType, reflect_type reflect.Type, value *reflect.Value)(SerializedValue, error){
|
|
var data []byte = nil
|
|
if value != nil {
|
|
data = make([]byte, 2)
|
|
binary.BigEndian.PutUint16(data, uint16(value.Int()))
|
|
}
|
|
return SerializedValue{
|
|
[]SerializedType{ctx_type},
|
|
data,
|
|
}, nil
|
|
}, func(ctx *Context, value SerializedValue)(reflect.Type, *reflect.Value, SerializedValue, error){
|
|
if value.Data == nil {
|
|
return reflect.TypeOf(int16(0)), nil, value, nil
|
|
} else {
|
|
if len(value.Data) < 2 {
|
|
return nil, nil, SerializedValue{}, fmt.Errorf("Not enough data to deserialize uint16")
|
|
}
|
|
val := int16(binary.BigEndian.Uint16(value.Data[0:2]))
|
|
value.Data = value.Data[2:]
|
|
i := reflect.ValueOf(val)
|
|
|
|
return i.Type(), &i, value, nil
|
|
}
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterKind(reflect.Int32, NewSerializedType("int32"),
|
|
func(ctx *Context, ctx_type SerializedType, reflect_type reflect.Type, value *reflect.Value)(SerializedValue, error){
|
|
var data []byte = nil
|
|
if value != nil {
|
|
data = make([]byte, 4)
|
|
binary.BigEndian.PutUint32(data, uint32(value.Int()))
|
|
}
|
|
return SerializedValue{
|
|
[]SerializedType{ctx_type},
|
|
data,
|
|
}, nil
|
|
}, func(ctx *Context, value SerializedValue)(reflect.Type, *reflect.Value, SerializedValue, error){
|
|
if value.Data == nil {
|
|
return reflect.TypeOf(int32(0)), nil, value, nil
|
|
} else {
|
|
if len(value.Data) < 4 {
|
|
return nil, nil, SerializedValue{}, fmt.Errorf("Not enough data to deserialize uint16")
|
|
}
|
|
val := int32(binary.BigEndian.Uint32(value.Data[0:4]))
|
|
value.Data = value.Data[4:]
|
|
i := reflect.ValueOf(val)
|
|
|
|
return i.Type(), &i, value, nil
|
|
}
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterKind(reflect.Uint, NewSerializedType("uint"),
|
|
func(ctx *Context, ctx_type SerializedType, reflect_type reflect.Type, value *reflect.Value)(SerializedValue, error){
|
|
var data []byte = nil
|
|
if value != nil {
|
|
data = make([]byte, 8)
|
|
binary.BigEndian.PutUint64(data, value.Uint())
|
|
}
|
|
return SerializedValue{
|
|
[]SerializedType{ctx_type},
|
|
data,
|
|
}, nil
|
|
}, func(ctx *Context, value SerializedValue)(reflect.Type, *reflect.Value, SerializedValue, error){
|
|
if value.Data == nil {
|
|
return reflect.TypeOf(uint(0)), nil, value, nil
|
|
} else {
|
|
if len(value.Data) < 8 {
|
|
return nil, nil, SerializedValue{}, fmt.Errorf("Not enough data to deserialize SerializedType")
|
|
}
|
|
val := uint(binary.BigEndian.Uint64(value.Data[0:8]))
|
|
value.Data = value.Data[8:]
|
|
i := reflect.ValueOf(val)
|
|
|
|
return i.Type(), &i, value, nil
|
|
}
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterKind(reflect.Uint64, NewSerializedType("SerializedType"),
|
|
func(ctx *Context, ctx_type SerializedType, reflect_type reflect.Type, value *reflect.Value)(SerializedValue, error){
|
|
var data []byte = nil
|
|
if value != nil {
|
|
data = make([]byte, 8)
|
|
binary.BigEndian.PutUint64(data, value.Uint())
|
|
}
|
|
return SerializedValue{
|
|
[]SerializedType{ctx_type},
|
|
data,
|
|
}, nil
|
|
}, func(ctx *Context, value SerializedValue)(reflect.Type, *reflect.Value, SerializedValue, error){
|
|
if value.Data == nil {
|
|
return reflect.TypeOf(SerializedType(0)), nil, value, nil
|
|
} else {
|
|
if len(value.Data) < 8 {
|
|
return nil, nil, SerializedValue{}, fmt.Errorf("Not enough data to deserialize SerializedType")
|
|
}
|
|
val := binary.BigEndian.Uint64(value.Data[0:8])
|
|
value.Data = value.Data[8:]
|
|
i := reflect.ValueOf(val)
|
|
|
|
return i.Type(), &i, value, nil
|
|
}
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterKind(reflect.Int64, NewSerializedType("int64"),
|
|
func(ctx *Context, ctx_type SerializedType, reflect_type reflect.Type, value *reflect.Value)(SerializedValue, error){
|
|
var data []byte = nil
|
|
if value != nil {
|
|
data = make([]byte, 8)
|
|
binary.BigEndian.PutUint64(data, uint64(value.Int()))
|
|
}
|
|
return SerializedValue{
|
|
[]SerializedType{ctx_type},
|
|
data,
|
|
}, nil
|
|
}, func(ctx *Context, value SerializedValue)(reflect.Type, *reflect.Value, SerializedValue, error){
|
|
if value.Data == nil {
|
|
return reflect.TypeOf(int64(0)), nil, value, nil
|
|
} else {
|
|
if len(value.Data) < 8 {
|
|
return nil, nil, SerializedValue{}, fmt.Errorf("Not enough data to deserialize SerializedType")
|
|
}
|
|
val := int64(binary.BigEndian.Uint64(value.Data[0:8]))
|
|
value.Data = value.Data[8:]
|
|
i := reflect.ValueOf(val)
|
|
|
|
return i.Type(), &i, value, nil
|
|
}
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterKind(reflect.Slice, SliceType,
|
|
func(ctx *Context, ctx_type SerializedType, reflect_type reflect.Type, value *reflect.Value)(SerializedValue, error){
|
|
var data []byte
|
|
type_stack := []SerializedType{ctx_type}
|
|
if value == nil {
|
|
data = nil
|
|
} else if value.IsZero() {
|
|
data = []byte{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}
|
|
} else if value.Len() == 0 {
|
|
data = []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}
|
|
} else {
|
|
data := make([]byte, 8)
|
|
binary.BigEndian.PutUint64(data, uint64(value.Len()))
|
|
var element SerializedValue
|
|
var err error
|
|
for i := 0; i < value.Len(); i += 1 {
|
|
val := value.Index(i)
|
|
element, err = serializeValue(ctx, reflect_type.Elem(), &val)
|
|
if err != nil {
|
|
return SerializedValue{}, err
|
|
}
|
|
data = append(data, element.Data...)
|
|
}
|
|
return SerializedValue{
|
|
append(type_stack, element.TypeStack...),
|
|
data,
|
|
}, nil
|
|
}
|
|
element, err := serializeValue(ctx, reflect_type.Elem(), nil)
|
|
if err != nil {
|
|
return SerializedValue{}, err
|
|
}
|
|
return SerializedValue{
|
|
append(type_stack, element.TypeStack...),
|
|
data,
|
|
}, nil
|
|
}, func(ctx *Context, value SerializedValue)(reflect.Type, *reflect.Value, SerializedValue, error){
|
|
if value.Data == nil {
|
|
elem_type, _, _, err := DeserializeValue(ctx, value)
|
|
if err != nil {
|
|
return nil, nil, SerializedValue{}, err
|
|
}
|
|
return reflect.SliceOf(elem_type), nil, value, nil
|
|
} else if len(value.Data) < 8 {
|
|
return nil, nil, SerializedValue{}, fmt.Errorf("Not enough data to deserialize slice")
|
|
} else {
|
|
slice_length := binary.BigEndian.Uint64(value.Data[0:8])
|
|
value.Data = value.Data[8:]
|
|
if slice_length == 0xFFFFFFFFFFFFFFFF {
|
|
elem_type, _, remaining, err := DeserializeValue(ctx, SerializedValue{
|
|
value.TypeStack,
|
|
nil,
|
|
})
|
|
if err != nil {
|
|
return nil, nil, SerializedValue{}, err
|
|
}
|
|
reflect_type := reflect.SliceOf(elem_type)
|
|
reflect_value := reflect.New(reflect_type).Elem()
|
|
return reflect_type, &reflect_value, SerializedValue{
|
|
remaining.TypeStack,
|
|
value.Data,
|
|
}, nil
|
|
} else if slice_length == 0x00 {
|
|
elem_type, _, remaining, err := DeserializeValue(ctx, value)
|
|
if err != nil {
|
|
return nil, nil, SerializedValue{}, err
|
|
}
|
|
reflect_value := reflect.MakeSlice(reflect.SliceOf(elem_type), 0, 0)
|
|
return reflect_value.Type(), &reflect_value, SerializedValue{
|
|
remaining.TypeStack,
|
|
value.Data,
|
|
}, nil
|
|
} else {
|
|
var reflect_value *reflect.Value = nil
|
|
var reflect_type reflect.Type = nil
|
|
saved_type_stack := value.TypeStack
|
|
for i := 0; i < int(slice_length); i += 1 {
|
|
var element_type reflect.Type
|
|
var element_value *reflect.Value
|
|
element_type, element_value, value, err = DeserializeValue(ctx, value)
|
|
if err != nil {
|
|
return nil, nil, value, err
|
|
}
|
|
if reflect_value == nil {
|
|
reflect_type = reflect.SliceOf(element_type)
|
|
real_value := reflect.MakeSlice(reflect_type, int(slice_length), int(slice_length))
|
|
reflect_value = &real_value
|
|
}
|
|
if i != (int(slice_length) - 1) {
|
|
value.TypeStack = saved_type_stack
|
|
}
|
|
slice_index_ptr := reflect_value.Index(i)
|
|
slice_index_ptr.Set(*element_value)
|
|
}
|
|
return reflect_type, reflect_value, value, nil
|
|
}
|
|
}
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterType(reflect.TypeOf(StringError("")), ErrorType,
|
|
func(ctx *Context, ctx_type SerializedType, t reflect.Type, value *reflect.Value) (SerializedValue, error) {
|
|
if value == nil {
|
|
return SerializedValue{
|
|
[]SerializedType{ctx_type},
|
|
nil,
|
|
}, nil
|
|
}
|
|
|
|
data := make([]byte, 8)
|
|
err := value.Interface().(StringError)
|
|
str := string(err)
|
|
binary.BigEndian.PutUint64(data, uint64(len(str)))
|
|
return SerializedValue{
|
|
[]SerializedType{SerializedType(ctx_type)},
|
|
append(data, []byte(str)...),
|
|
}, nil
|
|
}, func(ctx *Context, value SerializedValue)(reflect.Type, *reflect.Value, SerializedValue, error){
|
|
return nil, nil, SerializedValue{}, fmt.Errorf("unimplemented")
|
|
})
|
|
|
|
err = ctx.RegisterType(reflect.TypeOf(RandID()), NewSerializedType("NodeID"),
|
|
func(ctx *Context, ctx_type SerializedType, t reflect.Type, value *reflect.Value) (SerializedValue, error) {
|
|
var id_ser []byte = nil
|
|
if value != nil {
|
|
var err error = nil
|
|
id_ser, err = value.Interface().(NodeID).MarshalBinary()
|
|
if err != nil {
|
|
return SerializedValue{}, err
|
|
}
|
|
}
|
|
return SerializedValue{
|
|
[]SerializedType{ctx_type},
|
|
id_ser,
|
|
}, nil
|
|
}, func(ctx *Context, value SerializedValue)(reflect.Type, *reflect.Value, SerializedValue, error){
|
|
return nil, nil, SerializedValue{}, fmt.Errorf("unimplemented")
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterType(reflect.TypeOf(Up), NewSerializedType("SignalDirection"),
|
|
func(ctx *Context, ctx_type SerializedType, t reflect.Type, value *reflect.Value) (SerializedValue, error) {
|
|
var data []byte = nil
|
|
if value != nil {
|
|
val := value.Interface().(SignalDirection)
|
|
data = []byte{byte(val)}
|
|
}
|
|
return SerializedValue{
|
|
[]SerializedType{ctx_type},
|
|
data,
|
|
}, nil
|
|
}, func(ctx *Context, value SerializedValue)(reflect.Type, *reflect.Value, SerializedValue, error){
|
|
return reflect.TypeOf(Up), nil, SerializedValue{}, fmt.Errorf("unimplemented")
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterType(reflect.TypeOf(ReqState(0)), NewSerializedType("ReqState"),
|
|
func(ctx *Context, ctx_type SerializedType, t reflect.Type, value *reflect.Value) (SerializedValue, error) {
|
|
var data []byte = nil
|
|
if value != nil {
|
|
val := value.Interface().(ReqState)
|
|
data = []byte{byte(val)}
|
|
}
|
|
return SerializedValue{
|
|
[]SerializedType{ctx_type},
|
|
data,
|
|
}, nil
|
|
}, func(ctx *Context, value SerializedValue)(reflect.Type, *reflect.Value, SerializedValue, error){
|
|
return reflect.TypeOf(ReqState(0)), nil, SerializedValue{}, fmt.Errorf("unimplemented")
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterExtension(reflect.TypeOf((*LockableExt)(nil)), LockableExtType, nil)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterExtension(reflect.TypeOf((*ListenerExt)(nil)), ListenerExtType, nil)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterExtension(reflect.TypeOf((*GroupExt)(nil)), GroupExtType, nil)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
gql_ctx := NewGQLExtContext()
|
|
err = ctx.RegisterExtension(reflect.TypeOf((*GQLExt)(nil)), GQLExtType, gql_ctx)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterSignal(reflect.TypeOf((*StopSignal)(nil)), StopSignalType)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterSignal(reflect.TypeOf((*CreateSignal)(nil)), CreateSignalType)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterSignal(reflect.TypeOf((*StartSignal)(nil)), StartSignalType)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterSignal(reflect.TypeOf((*ReadSignal)(nil)), ReadSignalType)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterSignal(reflect.TypeOf((*ReadResultSignal)(nil)), ReadResultSignalType)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = ctx.RegisterNodeType(GQLNodeType, []ExtType{GroupExtType, GQLExtType})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
schema, err := BuildSchema(gql_ctx)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
gql_ctx.Schema = schema
|
|
|
|
return ctx, nil
|
|
}
|